Secondly, how do you reopen a tongue piercing?
If there’s no problem, they’ll simply put it back in for you (probably free of charge too). If they decide it really has closed up, they’ll most likely recommend you to wait a few weeks for it to fully heal before coming back to them to have it re-pierced. Don’t try to force it back in.
In this manner, what do you do if your tongue piercing falls out?
If your tongue stud has fallen out, try to reinsert it. Let your tongue hang out loosely and insert from the underside upward (or vice versa), without forcing it. Then try to speak as little as possible and go straight to your piercing studio.